南京市某区中小学生饮用水重金属含量及健康风险评估

发布时间：2018-02-27 09:37

本文关键词： 重金属饮用水健康风险敏感度分析　出处：《南京医科大学学报(自然科学版)》2016年07期 　论文类型：期刊论文

【摘要】：目的 :评价饮用水中重金属元素对中小学生健康的潜在危害。方法 :检测南京市某区中小学生住宅和学校的饮用水中重金属元素含量,采用美国国家环境保护署(EPA)推荐的分析方法建立风险分析模型,对8种重金属元素(As、Cr、Cd、Pb、Hg、Zn、Sb、Cu)经饮用水途径对中小学生引起的健康风险作出评估,并以蒙特卡罗模拟法分析评估的不确定性。结果 :致癌物(As、Cr、Cd)的年致癌风险均值分别为1.6×10~(-6)、1.5×10~(-7)、1.4×10~(-7(,非致癌物(Hg、Pb、Sb、Zn、Cu)的年健康风险均值分别1.0×10~(-10)、8.0×10~(-11)、6.8×10~-7、4.0×10~-11、3.9×10~-9,重金属元素总健康风险均值为2.5×10~(-6)。结论:重金属经饮用水途径产生的健康风险超过最大可接受风险水平(1×10~(-6)),对中小学生健康存在潜在不良影响。敏感度分析提示饮用水中重金属元素含量是健康风险的主要影响因素之一。
[Abstract]:Objective: to evaluate the potential harm of heavy metals in drinking water to the health of primary and middle school students. Methods: the contents of heavy metals in drinking water of primary and middle school students in a district of Nanjing were determined. A risk analysis model was established by using the analysis method recommended by the National Environmental Protection Agency (EPA) to assess the health risks to primary and middle school students caused by the drinking water route of eight heavy metal elements, AsCrCrCrCrncdcncdcncdcncncncncncncncncncncnbcncncncncncn@@. The uncertainty of the assessment was analyzed by Monte Carlo simulation. Results: the average annual risk of carcinogenesis was 1.6 脳 10 ~ (-6) ~ (1. 5 脳 10 ~ (-7)) and the average annual health risk of the non-carcinogen HgPbPbSbZn ~ (7) was 1.0 脳 10 ~ (-10) ~ (-8.0 脳 10 ~ (-10)) ~ (6. 8 脳 10 ~ (-74.0)) 脳 10 ~ (-10) ~ (-11) ~ (9), respectively. The mean value of the total health risk of heavy metals was 2.5 脳 10 ~ (10) ~ (-6). The health risk caused by heavy metals passing through drinking water is higher than the maximum acceptable risk level (1 脳 10 ~ (-1)), which has a potential adverse effect on the health of primary and middle school students. Sensitivity analysis indicates that the content of heavy metal elements in drinking water is a health risk. One of the main influencing factors.
【作者单位】：南京医科大学公共卫生学院;南京市鼓楼区疾病预防控制中心;
【基金】：江苏省高校优势学科建设工程资助
【分类号】：R123.1

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